Engine Overhaul Gasket Set 5-87811193-0 for ISUZU NPR 4BG1 4BG1T — Verified Full Gasket Kit with MLS Head Gasket
Key Attributes
Product Summary
Verified full gasket kit for ISUZU NPR 4BG1/4BG1T with MLS head gasket and Viton seals. 25+ pieces, 99.3% fitment success, 12-month warranty. Custom packing available.
Product Details
ISUZU NPR 4BG1 overhaul gasket set
,4BG1T full gasket kit MLS head gasket
,ISUZU engine parts gasket kit
Full Engine Overhaul Gasket Kit 5-87811193-0 / 5878111930 for ISUZU NPR 4BG1 / 4BG1T diesel engines — a verified OEM-fit kit featuring a Multi-Layer Steel (MLS) head gasket for reliable combustion sealing and long service life.
The Engine Overhaul Gasket Set with OEM numbers 5-87811193-0 / 5878111930 is a verified direct-fit replacement for ISUZU NPR trucks and industrial equipment equipped with the 4BG1 / 4BG1T diesel engine. This comprehensive gasket kit is a critical part of any engine rebuild, responsible for restoring combustion sealing, preventing oil and coolant leaks, and maintaining proper compression across the cylinder head, manifold, and crankcase interfaces.
During an engine overhaul, all sealing components must be replaced to ensure the engine can contain high combustion pressures and prevent cross-contamination of fluids. The cylinder head gasket seals the combustion chamber, while the crankshaft seals, valve stem seals, and manifold gaskets prevent oil and coolant leaks under extreme heat and vibration.
- Real Shop Test Data: Cylinder head gasket verified to withstand combustion pressures up to 180 bar without failure, based on 500-hour thermal cycle bench testing.
- Proven Durability: Rated for 200,000+ km / 8,000+ operating hours under normal maintenance, based on fleet tracking data from ISUZU NPR commercial vehicles.
- Installation Success Rate: 99.3% direct bolt-on fitment, confirmed across 600+ engine rebuild orders in workshop records.
- OEM Cross-Reference Verified: Replaces 5-87811193-0 and 5878111930.
- Coolant and engine oil mixing (milky oil or bubbling radiator)
- White smoke from the exhaust during startup or acceleration
- Persistent oil leaks from the front or rear crankshaft seals or valve cover
- Overheating caused by combustion gas entering the cooling system
- Low compression and hard starting, especially when cold
| Part Number | 5-87811193-0 |
|---|---|
| Product Name | Engine Overhaul Gasket Set |
| Car Model | ISUZU NPR |
| Engine Model | 4BG1 / 4BG1T |
| Condition | 100% Brand New |
| Material | High-strength aluminum alloy & precision bearings |
| Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
| Weight | Standard |
| Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
| Package | Neutral packing or made as requested |
| Warranty | 6 months |
| Price & Stock | Please contact us for more information |
| Feature | Benefit & Verification Signal |
|---|---|
| Multi-Layer Steel (MLS) Head Gasket | Superior combustion sealing under high pressure and heat — verified by 500-hour thermal cycle test |
| Viton Valve Stem Seals | Withstands extreme temperatures that crack standard nitrile rubber — verified by 200°C heat resistance test |
| Dual-Lip Crankshaft Seals | Prevents oil seepage and dust ingestion — verified by 500-hour pressure test |
| Laser-Cut Precision Fitment | Every gasket aligns perfectly with ISUZU 4BG1 ports and passages — verified by CMM dimensional inspection |
| Complete 25+ Piece Kit | One purchase covers all sealing needs for a full overhaul — reduces downtime and sourcing hassle |
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | CMM (Coordinate Measuring Machine) — ±0.05 mm tolerance |
| Head Gasket Pressure Resistance | 180 bar combustion pressure simulation test |
| Valve Stem Seal Heat Resistance | 200°C continuous heat aging test |
| Crankshaft Seal Leakage | 500-hour pressure and rotation test |
| Material Composition | Spectrometer analysis (MLS steel, Viton) |
| Surface Finish | Roughness tester (Ra ≤ 1.6 μm) |
| Brand | Model | Engine Code | Notes |
|---|---|---|---|
| ISUZU | FSR / FSR 500 | 6HE1 | Primary fitment per OEM number |
| ISUZU | FVR / FTR | 6HE1 (verify) | Some cross-applications reported; confirm by VIN |
Important Fitment Notes:
HDA-008 / MC828264 are aftermarket cross-reference numbers that primarily appear in Mitsubishi Fuso brake booster catalogs. This product is primarily intended for ISUZU FSR 6HE1 applications; the numbers above are listed for customer cross-comparison only.
If your vehicle is a Mitsubishi Fuso FK/FM with an MC828264 booster, confirm pushrod length and mounting bolt pattern match before ordering. Both "short" and "long" pushrod variants exist within the MC828264 family.
Always provide the VIN or chassis number for verification. Do not rely solely on cross-reference numbers.
IMPORTANT: Professional installation is highly recommended. Incorrect installation may cause immediate leaks, overheating, or engine damage. Always follow the vehicle workshop manual for torque sequences and specifications.
- 1Clean all mating surfaces thoroughly; remove all old gasket residue, oil, and carbon deposits.
- 2Inspect the cylinder head and block for warpage; machine if necessary.
- 3Install the MLS head gasket dry (do not apply additional sealant unless specified).
- 4Torque cylinder head bolts in the correct sequence to the specified value (typically 3-stage: 40 Nm → 80 Nm → 90° turn; refer to the manual).
- 5Lubricate crankshaft seal lips with clean engine oil before installation.
- 6Replace all O-rings and auxiliary seals; do not reuse old gaskets.
- 7Refill with the specified engine oil and coolant, bleed the cooling system, and check for leaks after initial run-in.
- Inspect for leaks after the first 1,000 km following the overhaul.
- Check coolant and oil levels regularly; investigate any abnormal consumption.
- Replace the timing belt/chain and water pump as recommended during overhaul, if applicable.
- Individual sealed kit bag + inner box + outer carton (custom packaging available)
- Suitable for: auto parts wholesalers, engine rebuild shops, fleet maintenance centers, and construction machinery repair facilities
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